[[!meta title="Playing With Sensors"]]
(Notes from a little Workshop during HAR 2009)
* GPIO: LEDs, Switches, Multi-position keylocks,
receiving the german DCF77 time signal station (maybe),
using GPIO pins to build a 1-Wire bus
* 1-Wire bus: Digital thermometers
# Hardware Notes
## Soekris net4801 GPIO pins wrong in manual
The GPIO Pins in the Soekris net4801 manual are utterly wrong
(at least there is a manual, unlike for the net5501, although
one with many errors...).

JP5 Pin

PC87366 Pin

JP5 Pin

PC87366 Pin

JP5 Pin

PC87366 Pin

JP5 Pin

C87366 Pin

3

GPIO16

4

GPIO17

5

GPIO18

6

GPIO19

7

GPIO20

8

GPIO21

9

GPIO22

10

GPIO23

## Connecting a LCD module to the 4801 JP5
This example assumes a DIP162 module.